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Gas-X Maximum Strength 250mg gas relief softgels, 30-count box
Gas-X Maximum Strength 250mg softgels Drug Facts and directions, 30-count box
Gas-X Maximum Strength softgels, 50-count box
A purple Gas-X Maximum Strength oval softgel with the letters 'GXM' on it, set against a blue background with light rays and the text 'Maximum Strength Softgels' at the top.
A blue Gas-X Maximum Strength Softgels graphic with white text reading, 'Specially formulated with simethicone for fast gas relief.'
Gas-X Maximum Strength Softgels text 'Nothing Works FASTER' in bold white lettering with a motion-stripe graphic on a blue gradient background.
Gas-X Maximum Strength simethicone gas relief box shown with a stopwatch on a blue graphic background, with large text reading 'Relieves Gas FAST' and a blurred road track scene behind the product.
Gas-X Maximum Strength Softgels ad; Blue background with white text and a circular logo on the right side.
Gas-X Maximum Strength 250mg gas relief softgels, 30-count box
Gas-X Maximum Strength 250mg softgels Drug Facts and directions, 30-count box
Gas-X Maximum Strength softgels, 50-count box
A purple Gas-X Maximum Strength oval softgel with the letters 'GXM' on it, set against a blue background with light rays and the text 'Maximum Strength Softgels' at the top.
A blue Gas-X Maximum Strength Softgels graphic with white text reading, 'Specially formulated with simethicone for fast gas relief.'
Gas-X Maximum Strength Softgels text 'Nothing Works FASTER' in bold white lettering with a motion-stripe graphic on a blue gradient background.
Gas-X Maximum Strength simethicone gas relief box shown with a stopwatch on a blue graphic background, with large text reading 'Relieves Gas FAST' and a blurred road track scene behind the product.
Gas-X Maximum Strength Softgels ad; Blue background with white text and a circular logo on the right side.

Gas-X Maximum Strength 250mg Softgels | 30 & 50 Count | UK

£27.99 - £36.99
£27.99
£27.99 - £36.99
£27.99
Availability:
Only 4 left!
Size 30 SoftGels

No Hidden Import Fees Or Duties Tax

Kingdom States covers all customs duties, guaranteeing no hidden import fees or taxes upon UK delivery. All prices on our website are final, and your order will be dispatched locally from within the UK for fast, next day delivery

MAXIMUM STRENGTH GAS RELIEF

Gas-X Maximum Strength.250 mg Softgels UK.

Gas-X Maximum Strength Softgels are a US-market anti-gas medicine containing 250 mg simethicone per softgel. They are labelled to relieve pressure, bloating and fullness associated with gas—the discomfort UK shoppers often describe as trapped wind.

Kingdom States supplies Gas-X Maximum Strength in the UK in 30-count and 50-count packs, with local UK dispatch.

250 mg per softgel Adults and ages 12+ 30 or 50 softgels

Quick reference

Active ingredient Simethicone 250 mg
Purpose Anti-gas medicine
Format Liquid-filled softgel
Pack options 30 or 50 softgels

ACTIVE INGREDIENT IN EACH SOFTGEL

250 mg

Simethicone
Anti-Gas Medicine

HOW GAS-X WORKS

Targeted relief for trapped wind.

Simethicone helps break up gas bubbles in the digestive tract so the body can pass trapped gas more naturally. Gas-X Maximum Strength is labelled for gas-related pressure, bloating and fullness.

When choosing a bloating remedy, check its intended use. This formula contains simethicone as its only active ingredient; it does not contain an antacid for heartburn and does not treat every cause of bloating.

Two pack sizes. The same 250 mg strength.

01 · 30-COUNT PACK

30 softgels.

The smaller pack contains 30 liquid-filled softgels, each providing 250 mg simethicone. The count describes the quantity supplied, not a daily dose or treatment course.

02 · 50-COUNT PACK

50 softgels.

The larger pack contains 50 softgels with the same 250 mg strength per softgel. Choosing a larger pack does not change the labelled directions or daily maximum.

03 · SOFTGEL FORMAT

Swallow with water.

Maximum Strength is a liquid-filled softgel taken with water. Gas-X chewable tablets are a different format; follow the directions on the exact product you choose.

KNOW THE GAS-X RANGE

Maximum Strength is the 250 mg softgel.

Gas-X uses several strength names. Check the amount of simethicone per tablet or softgel when comparing products.

Extra Strength

125 mg

Simethicone per unit

Ultra Strength

180 mg

Simethicone per softgel

Maximum Strength

250 mg

Per softgel · This product

Ultimate Strength

500 mg

Simethicone per softgel

This guide identifies strengths; it does not compare effectiveness or recommend a dose. Directions vary by product. Always follow the Drug Facts label on the exact pack supplied.

Kingdom States logo

WHY KINGDOM STATES?

US Gas-X. Supplied from the UK.

You can buy Gas-X Maximum Strength 250 mg Softgels in the UK through Kingdom States, a specialist importer of American health and personal-care products. Choose your preferred pack size using the options on this page. Orders are dispatched locally from within the UK.

Gas-X range guide

Compare Gas-X Strengths and Formats

Compare the simethicone strength, format and available pack sizes across the current Kingdom States Gas-X collection.

Gas-X variant Simethicone Format Pack sizes What makes it different
Ultimate Strength Current product
500mg Per softgel Softgels Swallow with water 20 softgels Highest simethicone strength per softgel in the current Gas-X range.
Maximum Strength Current product
250mg Per softgel Softgels Swallow with water 30 or 50 Softgels Provides more simethicone per softgel than Ultra Strength, with two pack-size options.
Ultra Strength Current product
180mg Per softgel Softgels Swallow with water 18 or 50 Softgels A mid-range softgel strength positioned between the chewable Extra Strength and Maximum Strength formulas.
Extra Strength
Cherry Creme Peppermint Creme
Current product
125mg Per tablet Chewable tablets Two flavour choices 48 or 72 Chewable tablets The chewable Gas-X option, available in Cherry Creme or Peppermint Creme flavours.

Strength refers to the quantity of simethicone in each tablet or softgel. A higher milligram amount does not automatically mean that a product is more suitable for every person. Always follow the directions supplied with the selected product.

Looking for a different Strength?

Four Gas-X softgel supplement boxes arranged in a fan shape on a white background, showing Extra Strength, Ultra Strength, Maximum Strength, and Ultimate Strength variants.

Browse our GAS-X collection

Available in different strength SoftGels & Chewable, flavoured Tablets.

See collection
Product questions answered

Gas-X Maximum Strength Softgels FAQ

Clear answers about UK availability, 250 mg simethicone, labelled directions, product differences and safe use.

01 Can you buy Gas-X Maximum Strength Softgels in the UK?

Yes, you can buy Gas-X Maximum Strength Softgels in the UK through specialist importers like Kingdom States. Kingdom States supplies the US-market 250 mg softgels to UK customers, with domestic dispatch and free tracked next-day delivery on UK Mainland orders.

02 What is the active ingredient in Gas-X Maximum Strength?

Each Gas-X Maximum Strength softgel contains 250 mg of simethicone. Simethicone is the product's anti-gas active ingredient.

03 What are Gas-X Maximum Strength Softgels used for?

The US Drug Facts label states that Gas-X Maximum Strength is used to relieve pressure, bloating and fullness commonly referred to as gas. It is a symptom-relief medicine and does not diagnose or treat the underlying cause of persistent digestive symptoms.

04 How does simethicone help with trapped gas?

Simethicone helps break up gas bubbles in the digestive tract. Once the trapped gas is broken up, the body can pass it more naturally.

05 How do you take Gas-X Maximum Strength Softgels?

Adults and children aged 12 years and over should swallow one or two softgels with water as needed after meals and at bedtime. Always follow the Drug Facts label on the physical pack supplied.

06 What is the maximum amount in 24 hours?

Do not exceed two Gas-X Maximum Strength softgels in 24 hours unless advised and supervised by a physician. The labelled directions apply to adults and children aged 12 years and over; ask a healthcare professional before giving this product to a child under 12.

07 What is the difference between Gas-X Maximum Strength and Ultimate Strength?

Gas-X Maximum Strength contains 250 mg simethicone per softgel, while Gas-X Ultimate Strength contains 500 mg per softgel. They are different strengths with different pack directions, so check the exact product name and Drug Facts label before use.

08 Is Gas-X Maximum Strength an antacid?

No. This Gas-X Maximum Strength softgel contains simethicone as an anti-gas medicine and does not contain an antacid active ingredient. It is labelled for gas-related pressure, bloating and fullness, not for neutralising stomach acid.

09 Do Gas-X Maximum Strength Softgels contain gelatin?

Yes. The current US Drug Facts label lists gelatin among the inactive ingredients. The product may therefore be unsuitable for vegetarian or vegan diets; check the physical pack if an ingredient or dietary restriction is important to you.

10 When should you seek advice about bloating or gas?

Speak with a pharmacist or doctor if bloating or gas does not go away, keeps returning or is worrying you. Seek medical advice if symptoms occur with ongoing abdominal pain, repeated diarrhoea or constipation, unintentional weight loss or blood in your stool; get urgent help for severe sudden symptoms.

!
Always follow the physical Drug Facts label

Product packaging, ingredients and directions can change. Read the label supplied with your order before use, do not use a damaged or broken blister, and keep the medicine out of reach of children.

Label-Led Product Guidance

Usage, Ingredients & Drug Facts.

Clear directions, complete formula information and practical safety guidance for Gas-X Maximum Strength 250 mg Softgels.

250 mg Simethicone
Anti-Gas Medicine
Active ingredient Simethicone 250 mg In each softgel
Product format Liquid-Filled Softgel Oral anti-gas medicine
Pack options 30 or 50 Softgels Original US retail carton
01 DirectionsHow to Take Gas-X Maximum Strength
1

Check the Age

The labelled directions are for adults and children aged 12 years and over.

2

Swallow With Water

Swallow one or two softgels with water as needed.

3

Use at Labelled Times

Take as needed after meals and at bedtime.

4

Observe the Daily Limit

Do not exceed two softgels in 24 hours unless medically advised.

Medical Supervision

More than two softgels in 24 hours should be taken only under the advice and supervision of a physician.

Use the Exact Pack Directions

Gas-X strengths have different directions. Check that the pack says Maximum Strength 250 mg before following this guidance.

02FormulaActive & Inactive Ingredients
250 mgMaximum Strength
Active Ingredient in Each Softgel

Simethicone

Purpose: anti-gas. Used for the relief of pressure, bloating and fullness commonly referred to as gas.

Inactive Ingredients

D&C Red No. 33, FD&C Blue No. 1, gelatin, glycerin, lecithin, purified water and titanium dioxide.

The official label's structured ingredient record identifies the lecithin as soybean lecithin. Ingredients and packaging can be updated by the manufacturer, so always check the physical pack if you have an allergy, sensitivity or dietary restriction. The softgel contains gelatin and may not suit vegetarian or vegan diets.

03SafetyWarnings & Precautions
Keep out of reach of children.Read all product information and retain the carton for important guidance.

Tamper-Evident Blister

Do not use a softgel if its blister is broken or damaged.

Children Under 12

The label gives directions for ages 12 and over. Ask a doctor or pharmacist before use by a younger child.

Daily Maximum

Do not exceed two softgels in 24 hours except under a physician's advice and supervision.

Ingredient Sensitivities

Check the physical ingredient list before use if you have a known allergy or sensitivity.

Persistent Symptoms

Speak with a pharmacist or doctor if bloating or gas does not go away, keeps returning or is worrying you.

Concerning Symptoms

Seek medical advice for ongoing abdominal pain, repeated diarrhoea or constipation, unintentional weight loss or blood in your stool; get urgent help for severe sudden symptoms.

04Product CareStorage & Additional Guidance
20°C–25°C

Controlled Room Temperature

Store at 68°F–77°F and keep the product in its original packaging.

PROTECT

Light, Heat & Moisture

Protect the softgels from light, heat and moisture and do not use a damaged blister.

Important: This page supports, but does not replace, the Drug Facts panel supplied with the product. Packaging and formulations can change; always read and follow the physical label before use.

Kingdom States Service

Tracked Delivery. Clear Returns.

Order with confidence from a specialist UK importer of trusted American health, beauty and personal-care products.

Free UK Mainland DeliveryAvailable on all orders
Tracked & InsuredDelivery progress from dispatch
30-Day Returns PolicyFor eligible sealed products

Delivery Information

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Returns Policy

Sealed and unopened products may be returned within 30 days where appropriate.

For hygiene and medicinal-product safety, opened or used items may not be eligible for return. This does not affect your statutory rights if an item is faulty, damaged or incorrectly supplied.

To request a return, email .

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